Negotiation-based service configuration - Software Development Case Studies in Java - page 548

client :
BasicNegotiator

clientPref :
PreferenceMap

provider :
BasicNegotiator

mediator :
Mediator

initialProposal()

bestProposal()

initialProposal()

bestProposal()

intersect()

intersect()

counterProposal()

rank()

evaluate()

counterProposal()

rank()

evaluate()

Figure 20.6 Behaviour of the mediator

public void addValue(String name, Value value){
AttributeSpec attribute # (AttributeSpec)
attributes.get(name);

attribute.addValue(value);

}
public AttributeSpec attribute(String name){
return (AttributeSpec)attributes.get(name);

}
public Collection attributes(){
return attributes.values();

}
public String toString(){
StringBuffer buffer # new StringBuffer();
Iterator it # attributes.values().iterator();